A CLASS OF D-SIMPLE SEMIGROUPS

[1] Birkhoff G, 1948, LATTICE THEORY, V25

[2] ON THE STRUCTURE OF SEMIGROUPS [J]. ANNALS OF MATHEMATICS, 1951, 54 (01) : 163 - 172

[3] On semi-groups [J]. PROCEEDINGS OF THE CAMBRIDGE PHILOSOPHICAL SOCIETY, 1940, 36 : 387 - 400

[4] The finite groups without the law of positive reversability. [J]. MATHEMATISCHE ANNALEN, 1928, 99 : 30 - 50

[1] Birkhoff G, 1948, LATTICE THEORY, V25

[2] ON THE STRUCTURE OF SEMIGROUPS [J]. ANNALS OF MATHEMATICS, 1951, 54 (01) : 163 - 172

[3] On semi-groups [J]. PROCEEDINGS OF THE CAMBRIDGE PHILOSOPHICAL SOCIETY, 1940, 36 : 387 - 400

[4] The finite groups without the law of positive reversability. [J]. MATHEMATISCHE ANNALEN, 1928, 99 : 30 - 50